-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 DOFXVqZBEBn/Xg6UiC2o0g==

<SEC-DOCUMENT>0001140361-10-048983.txt : 20101209
<SEC-HEADER>0001140361-10-048983.hdr.sgml : 20101209
<ACCEPTANCE-DATETIME>20101209162913
ACCESSION NUMBER:		0001140361-10-048983
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20101207
FILED AS OF DATE:		20101209
DATE AS OF CHANGE:		20101209

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Feeney David T
		CENTRAL INDEX KEY:			0001468829

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-13375
		FILM NUMBER:		101242644

	MAIL ADDRESS:	
		STREET 1:		2727 SCIOTO PARKWAY
		CITY:			COLUMBUS
		STATE:			OH
		ZIP:			43221

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Miller Craig A
		CENTRAL INDEX KEY:			0001468830

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-13375
		FILM NUMBER:		101242645

	MAIL ADDRESS:	
		STREET 1:		2727 SCIOTO PARKWAY
		CITY:			COLUMBUS
		STATE:			OH
		ZIP:			43221

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Kelly Kevin A
		CENTRAL INDEX KEY:			0001468988

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-13375
		FILM NUMBER:		101242646

	MAIL ADDRESS:	
		STREET 1:		2727 SCIOTO PARKWAY
		CITY:			COLUMBUS
		STATE:			OH
		ZIP:			43221

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			LSI INDUSTRIES INC
		CENTRAL INDEX KEY:			0000763532
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRIC LIGHTING & WIRING EQUIPMENT [3640]
		IRS NUMBER:				310888951
		STATE OF INCORPORATION:			OH
		FISCAL YEAR END:			0630

	BUSINESS ADDRESS:	
		STREET 1:		10000 ALLIANCE RD
		STREET 2:		P O BOX 42728
		CITY:			CINCINNATI
		STATE:			OH
		ZIP:			45242
		BUSINESS PHONE:		5135796411

	MAIL ADDRESS:	
		STREET 1:		10000 ALLIANCE RD
		STREET 2:		P O BOX 42728
		CITY:			CINCINNATI
		STATE:			OH
		ZIP:			45242

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	LSI LIGHTING SYSTEMS INC
		DATE OF NAME CHANGE:	19891121
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc1.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2010-12-07</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000763532</issuerCik>
        <issuerName>LSI INDUSTRIES INC</issuerName>
        <issuerTradingSymbol>LYTS</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001468830</rptOwnerCik>
            <rptOwnerName>Miller Craig A</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>2727 SCIOTO PARKWAY</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>COLUMBUS</rptOwnerCity>
            <rptOwnerState>OH</rptOwnerState>
            <rptOwnerZipCode>43221</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001468829</rptOwnerCik>
            <rptOwnerName>Feeney David T</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>2727 SCIOTO PARKWAY</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>COLUMBUS</rptOwnerCity>
            <rptOwnerState>OH</rptOwnerState>
            <rptOwnerZipCode>43221</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001468988</rptOwnerCik>
            <rptOwnerName>Kelly Kevin A</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>2727 SCIOTO PARKWAY</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>COLUMBUS</rptOwnerCity>
            <rptOwnerState>OH</rptOwnerState>
            <rptOwnerZipCode>43221</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2010-12-07</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>11919</value>
                    <footnoteId id="F6"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>9.294</value>
                    <footnoteId id="F7"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2253356</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2010-12-08</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>5609</value>
                    <footnoteId id="F6"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>9.273</value>
                    <footnoteId id="F8"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2247747</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Option to Buy</value>
                <footnoteId id="F4"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>5.93</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F5"/>
            </exerciseDate>
            <expirationDate>
                <value>2019-07-23</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Shares</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>30000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>30000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Option to Buy</value>
                <footnoteId id="F4"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>5.21</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F5"/>
            </exerciseDate>
            <expirationDate>
                <value>2020-08-19</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Shares</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>24000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>24000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">1,097,614 shares of the Issuer were distributed to the reporting persons with respect to their percentage interest in connection with a Purchase and Sale Agreement dated as of July 22, 2009 by and among the Issuer, LSI Acquisition Inc., ADL Technology Inc. (&quot;Technology&quot;) and ADL Engineering Inc. (&quot;Engineering&quot;). 1,372,062 shares of the Issuer will be held in escrow pursuant to the terms of an Escrow Agreement dated as of July 22, 2009 by and among LSI Acquisition Inc., each of the reporting persons and U.S. Bank, N.A. (the &quot;Escrow Agreement&quot;), under which the reporting persons will have the authority to direct the escrow agent thereunder to sell all or a portion of the escrowed shares.</footnote>
        <footnote id="F2">All shares held in escrow pursuant to the Escrow Agreement are subject to forfeiture under the terms of the Escrow Agreement for a period following the closing date in order to satisfy claims arising as a result of breaches of representations and warranties or covenants under the Agreement by Technology, Engineering or the reporting persons. Following the expiration of an initial eighteen month period under the Escrow Agreement, one half of the escrowed shares and any proceeds from sales thereof will be distributed to the reporting persons and following the termination of the escrow period under the Escrow Agreement, any remaining shares and any proceeds from sales thereof will be distributed to the reporting persons.</footnote>
        <footnote id="F3">Each of the reporting persons disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein, and the inclusion of these shares in this report shall not be deemed an admission of beneficial ownership of all of the reported shares for purposes of Section 16 or any other purpose.</footnote>
        <footnote id="F4">These holdings have been previously reported on Form 4.</footnote>
        <footnote id="F5">These options vest at a rate of 25% per year beginning on the first anniversary of the grant date.</footnote>
        <footnote id="F6">These shares were sold on the open market by Craig Miller, one of the reporting persons.</footnote>
        <footnote id="F7">Prices range from $9.25 per share to $9.46 per share.  The reporting person undertakes to provide full pricing information if requested by the Securities and Exchange Commission, the Issuer or a security holder of the Issuer.</footnote>
        <footnote id="F8">Price range from $9.25 per share to $9.31 per share.  The reporing person undertakes to provide full pricing information if requested by the Securities and Exchange Commission, the Issuer or a securhity holder of the Issuer.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ F. Mark Reuter, as Attorney-in-Fact for Craig A. Miller</signatureName>
        <signatureDate>2010-12-09</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ F. Mark Reuter, as Attorney-in-Fact for David T. Feeney</signatureName>
        <signatureDate>2010-12-09</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ F. Mark Reuter, as Attorney-in-Fact for Kevin A. Kelly</signatureName>
        <signatureDate>2010-12-09</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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